Parallel phase-shifting interferometry based on Michelson-like architecture

In this paper, we present a new scheme for parallel phase-shifting interferometry that employs a Michelson-like architecture and a simple polarization unit to generate two phase-shifting interferograms with phase shift of π/2 at a single camera exposure. The parallel phase-shifting unit is built wit...

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Bibliographic Details
Published in:Applied optics. Optical technology and biomedical optics 2010-12, Vol.49 (34), p.6612
Main Authors: Min, Junwei, Yao, Baoli, Gao, Peng, Guo, Rongli, Zheng, Juanjuan, Ye, Tong
Format: Article
Language:English
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Summary:In this paper, we present a new scheme for parallel phase-shifting interferometry that employs a Michelson-like architecture and a simple polarization unit to generate two phase-shifting interferograms with phase shift of π/2 at a single camera exposure. The parallel phase-shifting unit is built with simple optical components, and the distance between the parallel interferograms can be adjusted conveniently. Phase reconstruction is performed by using an algorithm developed for two-step phase-shifting interferometry. The practicability of the proposed configuration and the reconstruction method is demonstrated by experiments.
ISSN:2155-3165
DOI:10.1364/ao.49.006612